نتایج جستجو برای: system nested
تعداد نتایج: 2255717 فیلتر نتایج به سال:
A ring-imaging Čerenkov counter, to be read out by four 100channel PMT’s, is a key element of the BRAHMS Experiment. We report here the most recent results obtained with a prototype tested at the BNL AGS using several radiator gases, including the heavy fluorocarbon C4F10 . Ring radii were measured for different particles (π−, μ−, e−) for momenta ranging from 2 to 12 GeV/c employing pure C4F10 ...
A prototype 168-channel multi-gap resistive plate chamber (MRPC) time-of-flight system for the STAR experiment at RHIC was completed in February 2002, tested for 10 weeks at the AGS at BNL, and installed in the STAR detector for the 2002–2003 physics run. At the AGS, the MRPC detectors were operated on a number of different gas mixtures, high voltages, and threshold voltages. The results for de...
E91O is a large acceptance proton-nucleus experiment at the BNL AGS. The experiment completed its first run in the Spring of 1996, collecting more than 20 million pA events, using Bel Cut Au, and U targets. We present preliminary results for momentum conservation, slow proton distributions, and dN/dy for negative tracks.
Computing a ll-reducing ordering of a sparse matrix is a central problem in the solution of sparse linear systems using direct methods. In recent years, there has been signiicant research in developing a sparse direct solver suitable for message-passing multiprocessors. However, computing the ordering step in parallel remains a challenge and there are very few methods available. This paper desc...
In (Pennemann 2009), the correctness of graph programs relative to nested graph conditions is considered. Since these conditions are expressively equivalent to rst-order graph formulas, non-local graph properties in the sense of Gaifman are not expressible by nested graph conditions. We generalize the concept of nested graph conditions to socalled HR conditions and investigate the correctness f...
The latest gμ−2 measurement by Brookhaven confirms the earlier measurement with twice the precision. However, interpretation of the result requires specific assumptions regarding the errors in the hadronic light by light (LbL) correction and in the hadronic vacuum polarization correction. Under the assumption that the analysis on LbL correction of Knecht and Nyffeler and the revised analysis of...
We comment on several aspects of Skilling's paper presented at Valencia 8. In particular we prove the convergence in probability of the algorithm for a wide class of situations, comment on its potential utility and discuss aspects where further work is needed to assess the approach.
Motivated by the forthcoming data from the E950 experiment at BNL for small angle polarized proton-carbon scattering we revisit the problem of Coulomb phase. The usually used approximation of the momentum transfer squared (q 2) small compared to the inverse elastic slope is not justified within the kinematics of the E950 experiment. We go beyond this approximation and derive a new rather simple...
در این مطالعه یک روش Nested-PCR برای تشخیص دو ویروس BVDV از سویه NADL بهینه سازی گردید. در آزمایش RT-PCR، قسمتی از منطقه غیر قابل ترجمه ناحیه '5 ویروس به طول 249 جفت باز تکثیر شد. محصول PCR در وکتور R/T57pTZ کلون گردید و نتیجه تعیین ردیف اسیدهای نوکلوتیدی آن اختصاصی بودن آزمایش را تایید نمود. سپس پرایمرهای داخلی انتخاب و آزمایش Nested-PCR انجام گردید و یک قطعه DNA به طول 155 جفت باز تکث...
Reading and perceiving complex SQL queries has been a time consuming task in traditional database applications for decades. When it comes to decision support systems with automatically generated and sometimes highly nested SQL queries, human understanding or tuning of these workloads becomes even more challenging. This demonstration explores visualization methods to represent queries as graphs....
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